EP 0137677 A1 19850417 - Method for determining index of freshness of fish and mollusks.
Title (en)
Method for determining index of freshness of fish and mollusks.
Title (de)
Verfahren zur Bestimmung des Frischheitsgrades von Fischen und Mollusken.
Title (fr)
Méthode pour déterminer l'indice de fraîcheur de poissons et de mollusques.
Publication
Application
Priority
JP 15502783 A 19830826
Abstract (en)
A method for determining the degree of freshness of raw, frozen and processed fish, shellfish and mollusks more easily and quickly than by conventional methods comprises determining the index of freshness in terms of the ratio of the combined molar concentration of inosine and hypoxanthine to the total molar concentration of the decomposition products of adenosine triphosphate; each concentration is determined electrochemically by reference to the consumption of dissolved oxygen or the amount of hydrogen peroxide produced when a sample is subjected to action thereon by certain enzymes, namely nucleoside phosphorylase and xanthine oxidase for inosine and hypoxanthine and by crude alkaline phosphatase, nucleoside phosphorylase and xanthine oxidase for the decomposition products of adenosine triphosphate. Electrochemical measurements are made using e.g. a polarographic oxygen sensor, a galvanic cell oxygen sensor or a polarographic hydrogen peroxide sensor.
IPC 1-7
IPC 8 full level
G01N 33/50 (2006.01); C12Q 1/26 (2006.01); C12Q 1/34 (2006.01); C12Q 1/42 (2006.01); C12Q 1/48 (2006.01); C12Q 1/68 (2006.01); G01N 33/12 (2006.01)
CPC (source: EP US)
G01N 33/12 (2013.01 - EP US)
Citation (search report)
- EP 0016845 A1 19801015 - KYOWA HAKKO KOGYO KK [JP]
- [AD] JOURNAL OF FOOD SCIENCE, vol. 35, 1970, Chicago F.E. STONE "Enzymatic deamination of adenosine monophosphate (AMP), adenosine and adenine by salmon, crab and scallop muscle extracts" pages 565-567
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0137677 A1 19850417; EP 0137677 B1 19880914; CA 1230807 A 19871229; DE 3474069 D1 19881020; JP H0431680 B2 19920527; JP S6047695 A 19850315; US 4650752 A 19870317
DOCDB simple family (application)
EP 84305761 A 19840823; CA 461583 A 19840822; DE 3474069 T 19840823; JP 15502783 A 19830826; US 64305384 A 19840822